矿区形变区及中心形变速率研究

Study on subsidence area and its centre change rate

以河南省鹤壁市鹤壁二矿、三矿、五矿和六矿为实验区,采用永久散射体差分干涉测量技术(PS-InSAR),对实验区2008—2010年共12景ENVISAT ASAR数据时序SAR影像进行处理.实验结果提取出6个形变较大的相位变化区域,与实际矿区空间位置有良好的吻合,在2008—2010年期间累积形变量最大至60 mm,最大形变速率为25 mm/a,其它形变区域中心的形变速率都在16～20 mm/a之间.

The second mine, third mine, fifth mine and sixed mine in HEBI city in Henan Province are test study areas. According to the technical principles of the permanent-scatterer differential interferometry （ PS-In- SAR） , we use 12 scenes of ENVISAT ASAR data timing SAR images from 2008 to 2010, and the data is pro- cessed in the IPTA module in GAMMA software. The experimental results shows that there are 6 areas that have large surface deformation and coincide with the actual mining area location. The cumulated displacement of those points is up to 60 mm in the period of 2008--2010, and the largest deformation rate is 25 mm/a. Other deformation rate is between 16 -20 mm/a.